# Contributions of Jets in Net Charge Fluctuations from the Beam Energy Scan at RHIC and LHC

## TL;DR

This study uses the HIJING Monte Carlo model to analyze how jets influence net charge fluctuations in ultra-relativistic heavy-ion collisions at RHIC and LHC, revealing jets' role in fluctuation reduction and model limitations.

## Contribution

It demonstrates the impact of jets and minijets on net charge fluctuations using HIJING simulations, comparing with experimental data and highlighting the model's partial scaling behaviors.

## Key findings

- HIJING reproduces broad features of net charge fluctuations but overestimates their magnitude.
- Jets/minijets production reduces net charge fluctuations in the model.
- Partial $dN_{ch}/dta$ and $1/N$ scaling observed due to independent nucleon-nucleon collisions.

## Abstract

Dynamical net charge fluctuations have been studied in ultra-relativistic heavy-ion collisions from the beam energy scan at RHIC and LHC energies by carrying out the hadronic model simulation. Monte Carlo model, HIJING is used to generate events in two different modes, HIJING-default with jet quenching switched off and jet/minijet production switched off. A popular variable, $\nu_{[+-,dyn]}$ is used to study the net charge fluctuations in different centrality bins and the findings are compared with the available experimental values reported earlier. Although the broad features of net charge fluctuations are reproduced by the HIJING, yet the model predicts the larger magnitude of fluctuations as compared to the one observed in experiments. The role of jets/minijets production in reducing the net charge fluctuations is, however distinctly visible from the analysis of the two types of HIJING events. Furthermore, $dN_{ch}/d\eta$ and $1/N$ scaling is partially exhibited which is due to the fact that in HIJING, nucleus-nucleus collisions are treated as multiple independent nucleon-nucleon collisions.